JPH0445032A - Transfer device for lead frame - Google Patents

Abstract

PURPOSE:To take up each lead frame on a stacker surely piece by piece for transference to a conveying passage by installing an elastic contact member which is attached to a transfer means via a spring member, elastically contacting with an edge of each lead frame, and separates this lead frame from the lower layered one. CONSTITUTION:A transfer means 3 takes up each of lead frames LF stacked solidly on a stacker 1 by suction force, transferring them to a conveying passage 2. When a suction pad 5 of the transfer means 3 contacts with each of these lead frames LF on the stacker 1 and sucks it for transference, an elastic contact member 6 elastically contacts with an edge of each lead frame LF, thereby separating this lead frame LF from the lower layered one. Consequently, the suction pad 5 takes up the uppermost lead frame LF alone, thus it transfers them surely piece by piece to the conveying passage 2.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a lead frame transfer device, in which a suction pad adsorbs lead frames stored in a pile on a stuff car and transfers them to a side transport path. The present invention relates to means for preventing a suction pad from accidentally picking up two or more lead frames and transferring them to a conveyance path during transfer.

(Prior art) In the electronic component mounting process in which electronic components are mounted on lead frames, the lead frames are stacked and stored in a stacker, and the lead frames are transferred one by one to a conveyance path, and the lead frames are transferred to the bond coating process. It is designed to be transported to various processes such as the bonding process and bonding process.

FIG. 3 shows a conventional lead frame transfer device, in which 100 is a stacker for stacking and storing lead frames LF, 101 is a conveyance path for pitch-feeding lead frames LP to the next process, and 102 is a stacker. 100
This is a suction pad section that reciprocates between the stacker 100 and the transport path 101 and transfers the lead frames LF in the stacker 100 to the transport path 101 one by one.

When the suction pad section 102 suctions and ticks up the uppermost lead frame LF, two or more lead frames LF may be ticked up by mistake.
In order to prevent this, a blower lO3 is installed above the stacker 100, and air is blown from this to the lead frame LF adsorbed by the suction pad section 102, so that the second and subsequent lead frames LF are blown off. It has become.

(Problem to be Solved by the Invention) However, the above conventional means lacks reliability because the second and subsequent lead frames LF are blown off by wind force, and in some cases, the first lead frame LF is There was also a risk of it being accidentally blown away.

Therefore, the present invention provides that the lead frame of the stacker is
To provide a means for reliably preventing two or more sheets from being mistakenly picked up on a suction band and transferred to a conveyance path.

(Means for Solving the Problems) For this purpose, the present invention provides a stacker that stores lead frames in a stacked manner, a stacker that moves back and forth between the stack car and the lead frame conveyance path, and a suction pad that moves the lead frames of this stacker. a transfer means for adsorbing the material and transferring it to the conveyance path;
A lead frame transfer device is constituted by an elastic contact member that is attached to the transfer means via a spring material and comes into elastic contact with the edge of the lead frame to separate the lead frame from the underlying lead frame. There is.

(Function) In the above configuration, the transfer means adsorbs and ticks up the lead frames stored in a pile in the stuff car,
Transfer to conveyance path. Here, when the suction pad of the transfer means lands on the lead frame of the stacker and adsorbs it, the elastic contact member comes into elastic contact with the edge of the lead frame.
Since this lead frame is separated from the lower lead frame, the suction band picks up only the uppermost lead frame and reliably transfers it one by one to the conveyance path.

(Example) Next, the present invention will be described in detail with reference to the drawings.

In FIG. 1, 1 is a stacker, in which lead frames LF are stored in a stacked manner.

Reference numeral 3 denotes a transfer means, which moves back and forth between the stacker 1 and the conveyance path 2 and transfers the lead frame LF of the stacker 1 to the conveyance path 2.

The transfer means 3 is constructed by providing a frame 4 with a plurality of suction bands 5. In FIG. 2, reference numeral 6 denotes an elastic contact member, which is rotatably attached to the frame 4 via a pin 7. 8 is a spring material that urges the elastic member 6 in the counterclockwise direction;
9 is a stopper that defines the rotation limit of the elastic contact member 6.

The elastic contact member 6 has this tooth-shaped uneven portion 10, and this uneven portion 10 comes into elastic contact with the edge of the uppermost lead frame LF housed in the stuff car 1 due to the spring force of the spring member 8. This lead frame LF is connected to the lower lead frame LF.
Separate from.

This apparatus has the above-mentioned configuration, and the transfer means 3 arrives on the stacker 1, sucks the lead frame LF stacked on the stacker 1 onto the suction pad 5, and picks up the lead frame LF. Here, when the suction pad 5 lands on the lead frame LF, the uneven portion 10 of the elastic contact member 6 will be
-The uppermost lead frame LF is in elastic contact with the edge of the lead frame LF.
Since the lead frame LF is separated from the lower lead frame LF, the suction pad 5 reliably picks up one lead frame LF and transfers it to the conveyance path 2.

(Effects of the Invention) As explained above, the present invention provides a stacker that stores lead frames in a stacked manner, a reciprocating movement between the stacker and the lead frame conveyance path, and a suction pad that sucks the lead frames of this stacker. a transfer means for transferring the lead frame to the conveying path; and an elastic member attached to the transfer means via a spring material to come into elastic contact with the edge of the lead frame to separate the lead frame from the underlying lead frame. Since the lead frame transfer device is composed of the following, it is possible to reliably pick up the lead frames of the stacker one by one and transfer them to the conveyance path.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of a lead frame transfer device, Fig. 2 is a partial side view,
FIG. 3 is a side view of the conventional means. LF... Lead frame... Stacker 2... Conveyance path 3... Transfer means 5... Adsorption band 6... Elastic contact member 8... Spring material

Claims (1)

[Claims] A stacker that stacks and stores lead frames,
A transfer means that reciprocates between the stacker and the lead frame conveyance path, attracts the lead frame of this stacker to a suction pad, and transfers it to the conveyance path; 1. A lead frame transfer device comprising: an elastic contact member that separates the lead frame from an underlying lead frame by coming into elastic contact with an edge of the frame.